Improvement in tuyeres



UNITED STATES PATENT OFFICE.

ROBERT D. KINOAID, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO HIMSELF ANDHALL Sz; SPEER, OF SAME PLACE.

IMPROVEMENT IN TUYERES.

Speciiication forming part of Letters Patent No. 53,535,-dated March 27,1866.

To all rwhom it may concern:

Be it known that I, ROBERT D. KINCAID, of Pittsburg, in the count-y ofAllegheny and State ot Pennsylvania, have invented certain new anduseful Improvements in Waterrlluyeres; and I do hereby declare that thefollowing is a full, clear, and exact description of the same, referencebeing had to the accompanying drawings, making a part ot' thisspecication, in which- Figure l represents a side view of thewatertuyere. Fig. 2 represents a vertical section taken centrally andlongitudinally through the same.

Similar letters of reference where they occur in the separate figuresdenote like'parts in both.

Water-tuyeres have heretofore been used in which two small water-pipeswere used-olie to conduct the cold water into the main pipe and theother to carry out the hot Water. This made a circulation in the water;but the pipes were liable to be choked up by dirt, sediment, &c., whichcauses the main pipe to burn out or burst.

My invention consists in attaching the main pipe to a water box orreservoir, the attached end being left open in the inside of thewaterbox, so that when in use the cold water may pass in along the lowerside of the main pipe to the end in the re, and the water, when heated,return along the top side of the main pipe to the water box orreservoir, and so that it' there be any dirt or sediment in the box, andit passes into-the main pipe, the reaction or circulation of the waterwill bring it back again into the box, and thus avoid all liability ofthe pipe choking or being stopped up by dirt or sediment.

My invention further consists in extending the air-pipe that conductsthe blast to the lire through the open end of the main pipe, and throughthe water-box to the opposite side, so ,that a bellows may be attached,and a branch pipe extending up through the water-box, so that afan-blast may be attached, either or both, to be used, as may bedesired.

To enable others skilled in the art to make and use my invention, I willproceed to describe the same with reference to the drawings.

A may represent a tank, reservoir, or waterbox, which may be suppliedwith water in any usual well-known way. Through this box, and near thebottom thereof, so as to be surrounded hy water, passes the air-pipe B,that conducts the blast to the tire. That end of the air-pipe B next thenre is inclosed in an outer pipe or jacket, C, so as to leave awater-space,

a, between the two, the inner end, b, of saldA outer pipe within theWater-box being left entirely open, and secured and made water-tight bya nut, c, and packing, if necessary, and the outer end, d, of said airand jacket or Waterpipe being sealed, as shown.

When the tuyere is in use and its end exposed to the re in the furnace,the water becoming heated will pass along the upper part of the pipe andback to the water-box, While the colder Water will take its place bypassing in along the under side of the pipe, and thus a continuouscirculation is kept up. Should there be any dirt or sediment in thewater, and it should pass in with the water into the pipe, it willreturn or pass out again with the` upper current, and thus avoid allliability of stopping up the pipe or water-space, as there are no eddiesor dead water-spaces to hold or cheek it. When the water becomes foul ora fresh supply needed, the foul water 4may be drawn oft' at the cock Danda fresh supply let into the box or tank.

The air-pipe B, where it passes into the box A, may be packed to keep itWater-tight, and may be furnished with a screw-cap, c, when not used, toclose it up.

A vertical pipe, E, is joined to the main airpipe at j'. This pipe isdesigned to be connected with a fan-blower when such a blower is used,while a bellows may be attached to the pipe B by removing the screw-cape, and both the fan-blower and bellows may be used, or either, as theease may be.

The connection of the pipe E to the main airpipe B, as at f, should betight, so as to prevent any leakage of air or of water.

Having thus fully described my invention, what I claim isl. Incombination with a water box or reservoir, and a blast or air-pipepassing through it the sleeve-jacket or pipe surrounding said air-pipe,and open to and communicating with the water in the water-box, for thetriple purpose of surrounding said blast-pipe with water, and forl(illowing for 2n free circulation ot box for the purpose of beingconnected with a the Water, and to prevent any sediment from fan-blower,both or either to be used,rsubsten clogging or lodging therein,substantially es tially as described.

and for the purpose described.

2. In combination with an air-pipe passing f ROBERT D. KINCAID. throughthe Water-box horizontally, capable Witnesses: of being attached orconnected with a bellows, I. DONALDSON,

@vertical branch pipe rising up Within the l T. OGONNOR.

